Single line simple mq4 documented function not working

Question

The following simple script is producing no output:

void OnStart()
  {
   Print(SymbolName(1, false));
  }

The log file entries are as follows:

2   11:35:32.112    Script scratch USDCHF,M1: loaded successfully
2   11:35:34.147    Script scratch USDCHF,M1: removed

The marketwatch is as per the screenshot:

what am I missing??